1. The problem statement, all variables and given/known data Imagine that you set up an apparatus to reproduce Thomson's experiment, as shown in the figure. In an highly evacuated glass tube, a beam of electrons, each moving with speed vo, passes between two parallel plates and strikes a screen at a distance L from the end of the plates. First, you observe the point where the beam strikes the screen when there is no electric field between the plates. Then, you observe the point where the beam strikes the screen when a uniform electric field of magnitude is established between the plates. Call the distance between these two points delta y . What is the distance, delta y, between the two points that you observe? Assume that the plates have length d, and use e and m for the charge and the mass of the electrons, respectively. Express your answer in terms of e ,m ,d ,vo ,L , and Eo . 2. Relevant equations 3. The attempt at a solution I really have no idea how to begin with it. I assume I need to find the distance when the beam is not deflected and then the distance after the beam is deflected. then substract them. Please help me..